Surge's personality is mostly unknown, as they seem incapable of most forms of communication outside merely summoning the animatronics connected to the M.X.E.S. network. All anyone knows is that she is very flirty, and she only appears when putting on a headset, because she is a security protocall for using said headset for too long. Failing to remove the headset for too long obscures your view in static and notifies Surge to you, occasionally causing a jumpscare by her.